Originally Posted by jasonapr78
I have a 2001 SSEi and am about to start my modifications myself. I'm having a custom exhaust done with a high-flow cat, CAI, and a 180 T-Stat. I expect to see a nice gain in HP and torque and haven't looked seriously yet into changing the pulleys although that would probably be my next step after I get headers installed. My question to you is were you completely stock when you threw in the 3.4"? I would obviously have the exhaust, cat, 180 t-stat, and CAI done at the very least so I would expect to see a more increase in power than you did if you only have the pulley? Also, do you have any existing warranty on your car? I have warranty (bumper-to-bumper) up to 150,000 and I'm sitting on 52,000 right now so I wanna be careful and not void my warranty...that'* why I haven't seriously considered the pulley yet. Just let me know..thanks!
I was completely stock when putting on the pulley. You should see more gains with those additional mods. The smaller pulley makes the supercharger push more into the engine - basically sucking it in from intake. A cold air intake will let it pull-in a greater amount of cooler (denser) air. The exhaust will let you get out used air faster and easier, meaning less boost waisted pushing it out of engine.
The intake, exhaust, and t-stat will also keep engine cooler, which will prevent knock retard and allow increased timing. This is usually not much of a problem with 3.4" pulley - but varies based on car and conditions.
You may want to use SLP parts if you do not want void warranty, or least maintain net coverage.
SLP offers a warrany which covers voided portions of GM warranty. They are also essentially an offical GM tuner. You use to be able to order GTX for Grand Prix and FireHawk for Firebird packages right from the dealer. GM would ship car to SLP for installation!